13820565206 has 32 divisors (see below), whose sum is σ = 24688376640. Its totient is φ = 5677088256.

The previous prime is 13820565181. The next prime is 13820565229. The reversal of 13820565206 is 60256502831.

It is a super-2 number, since 2×13820565206² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13820565206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68615 + ... + 179858.

It is an arithmetic number, because the mean of its divisors is an integer number (771511770).

Almost surely, 2^13820565206 is an apocalyptic number.

13820565206 is a deficient number, since it is larger than the sum of its proper divisors (10867811434).

13820565206 is a wasteful number, since it uses less digits than its factorization.

13820565206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248648.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 13820565206 in words is "thirteen billion, eight hundred twenty million, five hundred sixty-five thousand, two hundred six".